GATE Civil Engineering (CE) 2020 Shift 1 Solved Paper

Question : 33 of 65

Marks: +1, -0

Velocity of flow is proportional to the first power of hydraulic gradient in Darcy's law. This is law is applicable to

Turbulent flow in porous media
Transitional flow in porous media
Laminar flow in porous media
Laminar as well as turbulent flow in porous media

Solution:

The simplest form of Darcy's law states that

{V}=\;{ {Q}}/{ {A}}=- {K} \;{∂ {h}}/{∂l}

Since the velocity in laminar flow is proportional to the first power of the hydraulic gradient (Poiseuille's law), it is reasonable to apply Darcy's law to laminar flow in porous media.

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